Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
1101 AM MST Fri Jan 16 2026

IDZ011-013-014-016-028-033-ORZ061>063-171400-
/O.CON.KBOI.AS.Y.0001.000000T0000Z-260119T1200Z/
West Central Mountains-Boise Mountains-Upper Treasure Valley-
Western Magic Valley-Camas Prairie-Upper Weiser River-Harney
County-Baker County-Malheur County-
Including the cities of Diamond, Dunnean, Pine, New Princeton,
Blaine, Twin Falls, Glendale, Cambridge, Fruitvale, Mesa, McCall,
Ola, Big Creek, Warm Lake, Venator, Boise, Prairie, Council, Hill
City, Crane, Buchanan, Goodrich, Burns, Selby, Cascade, Indian
Valley, Soldier, Fairfield, Anderson Dam, Baker, Cuprum, Corral,
Bear, and Malheur City
1101 AM MST Fri Jan 16 2026 /1001 AM PST Fri Jan 16 2026/

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ MONDAY...

* WHAT...An extended period of stagnant air, with light winds and
  little vertical mixing. This is due to an inversion near the
  surface that will continue to trap pollutants.

* WHERE...Portions of south central and southwest Idaho and
  northeast and southeast Oregon.

* WHEN...Until 5 AM MST /4 AM PST/ Monday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.

&&

$$

ST

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
956 AM MST Fri Jan 16 2026

IDZ054-059-162200-
/O.CON.KPIH.AS.Y.0001.000000T0000Z-260118T1900Z/
Lower Snake River Plain-Franklin/Eastern Oneida Region-
Including the cities of Pocatello, Preston, Malad, Fort Hall,
Thatcher, American Falls, Blackfoot, and Shelley
956 AM MST Fri Jan 16 2026

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON MST SUNDAY...

* WHAT...Poor air quality will continue. This is due to an inversion
  and stagnant air conditions near the surface that will continue to
  trap pollutants.

* WHERE...Franklin/Eastern Oneida Region and Lower Snake River Plain.

* WHEN...Until noon MST Sunday.

* IMPACTS...Periods of air stagnation have led to the buildup of
  pollutants near the surface.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If possible, reduce or eliminate activities that contribute to air
pollution, such as outdoor burning, and the use of residential wood
burning devices. Reduce vehicle trips and vehicle idling as much as
possible. Check with local agencies for possible restrictions in
your area.

&&

$$

Visit weather.gov/pocatello for more information.

JKeyes

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
207 AM MST Fri Jan 16 2026

WYZ001>020-022>030-171315-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
207 AM MST Fri Jan 16 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight.

Widespread northwesterly wind gusts of 25 mph to 40 mph expected
east of the Continental Divide. Wind gusts up to 65 mph are possible
across Johnson County, especially northern Johnson County. The
strongest winds are expected to impact Buffalo and I-90.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$